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Segment, Customers, and Geographic Information (Tables) | 9 Months Ended
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Mar. 31, 2020
Segment Reporting Information [Line Items] |
Net Revenue within Geographic Areas Based on Customers' Locations | Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in millions):
|  | Three Months Ended |  |  | Nine Months Ended |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
China |  | $ | 122.1 |  |  | $ | 190.0 |  |  | $ | 437.1 |  |  | $ | 669.5 |
Japan |  |  | 128.1 |  |  |  | 58.4 |  |  |  | 340.8 |  |  |  | 204.9 |
Taiwan |  |  | 42.3 |  |  |  | 47.6 |  |  |  | 164.0 |  |  |  | 185.0 |
Other |  |  | 21.1 |  |  |  | 19.6 |  |  |  | 58.1 |  |  |  | 48.9 |
South Korea |  |  | 13.1 |  |  |  | 13.8 |  |  |  | 51.0 |  |  |  | 45.6 |
United States |  |  | 1.4 |  |  |  | 4.6 |  |  |  | 5.3 |  |  |  | 23.2 |
|  | $ | 328.1 |  |  | $ | 334.0 |  |  | $ | 1,056.3 |  |  | $ | 1,177.1 |
Net Revenue from External Customers | Net revenue from our customers for each group of similar products was as follows (in millions):
|  | Three Months Ended |  |  | Nine Months Ended |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Mobile product applications |  | $ | 176.6 |  |  | $ | 204.7 |  |  | $ | 578.6 |  |  | $ | 741.8 |
PC product applications |  |  | 78.9 |  |  |  | 66.2 |  |  |  | 228.3 |  |  |  | 198.7 |
IoT product applications |  |  | 72.6 |  |  |  | 63.1 |  |  |  | 249.4 |  |  |  | 236.6 |
|  | $ | 328.1 |  |  | $ | 334.0 |  |  | $ | 1,056.3 |  |  | $ | 1,177.1 |
Sales Revenue, Net [Member] |
Segment Reporting Information [Line Items] |
Major Customers as Percentage of Net Revenue | Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Customer A |  | 21% |  |  | * |  |  | 17% |  |  | * |
Customer B |  | 13% |  |  | 10% |  |  | 12% |  |  | * |
Customer C |  | * |  |  | 17% |  |  | * |  |  | 18% |
Customer D |  | * |  |  | 16% |  |  | * |  |  | 14% |
* | Less than 10%
Accounts Receivable [Member] |
Segment Reporting Information [Line Items] |
Major Customers as Percentage of Net Revenue | Major customer accounts receivable as a percentage of total accounts receivable were as follows:
|  | March 31, |  |  | June 30, |
|  | 2020 |  |  | 2019 |
Customer A |  | 18% |  |  | * |
Customer B |  | 17% |  |  | * |
Customer C |  | 12% |  |  | 25% |
Customer D |  | * |  |  | 16% |
* | Less than 10%

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